Machine for twisting together threads or the like



y 8, 1941- J. s. WALTERS 2.248,838

MACHINE FOR TWISTING TOGETHER THREADS OR THE LIKE Filed May 20, 1940 am/wwli" ATTORNEYS Patented July 8, 1941 MACHINE FOB TWISTING TOGETHER THREADS OR THE LIKE John Stephen Kvvanei-s, Glemsford, England Application May 20, 1940, Serial No. 386,289 In Great Britain May 22, 1939 '9 Claims.

This invention relates to machines-for twisting together two or more filaments, threads, yarns or the like and for convenience hereinafter all such threads or filaments and their equivalents are referred under the general term yarns".- In twisting machines as hitherto used, whether uptwistlng, ring twisting, flier twisting or in double twist doubling machines, some or all of the yarns to be twisted together are, by the unavoidable nature of the process, themselves twisted about their own axes; so that in many cases, for

instance in the manufacture of Organzine, it is necessary to twist1the said yarns in the reverse direction before uniting them.

The. object of the present invention is to sim-. pliiy such machines by providing improved means for twisting together two or more yarns in catenary and is thussornetimes known as the catenary or cateneration of the yarn.

Reference will now be made to the accompanying drawing which illustrates diagrammatically and by way of example a side elevation of a construction according to the invention.

In the construction illustrated, a hollow spindle l is mounted to rotate about a horizontal axis and is supported entirely at its mid-portion by a such manner that, in the process of twisting one yarn about another, twisting of the yarns about their own axes is avoided and a mechanism provided capable of application to the manufacture of a wide variety of products.

According to the present invention, mechanism for twisting together two or more yarns is provided comprising meansfor causing an outer yarn to rotate about an inner yarn in they form of a balloon, and means for supporting the supply package for the inner yarn inside the balloon formed by the outer yarn, characterized in that both of said yarns are caused to travel over and with a rotary device to cause the one yarntobe laid or wrapped symmetrically aboutthe other yarn asthey leave the center of the said rotary device to form a finished yarn wherein each of the component yarns receives individually no twist about its own axis; T

It is to .be understood that the term yam used in the preceding paragraph and in the following description includes the material inprocess of being twisted whether it consists of one or of several yarns and that the terms outer" and "inner" refer only to the relative positions of the yarns at the beginning of the process and not to their relative positions in the resulting thread.

The term balloon used herein has the meaning commonly ascribed to it in the textile trade, namely, the path traced out in space by a portion of thread which is being rotated between two fixed points around the axis extending between said points. The shape and form of the balloondepend on the speed of rotation, the weight and thickness of the yarn, the tension in the yarn and the position of the guides through which it passes. Due to the action of centrifugaliorce the balloon normally has the form of a. modified ball or other antiiriction bearing 2. The spindle is rotated by a driving belt 3 running over-a pulley 4 which is integral with, or firmly fixed to, the end of the hollow spindle l.

A disc 5 is fixed tothe hollow spindle I and rotates with it, this disc 5 having a smooth rim over which the yarns pass as hereinafter described and a number of smooth edged holes 6 through one oiwhich each of the yarns also passes. The disc 5 is of such a diameter that the balloon made by the out r yarn is large enough to clear those parts of the structure which are situated inside the said balloon when the machine is in operation and which will next be described.

Around the opposite end of the spindle l to that which carries the pulley 4 is mounted a floating ball or other anti-friction bearing I from which depends a stabilising weight 8 carrying a bracket 3 having a support It] for a. supply bobbin or package ii for the inner yarn l2. The weight 8 is provided to prevent the bracket 8 and the parts carried .thereby from rotating with the spindle l The outer yarn i3 is supplied from a bobbin or package it carried by a support 15 situated at a convenient distance from the parts of the invention already described. A support I6 carries a take-up package ll which is rotated by frictional contact with a driving roller l8. The thread is laid uniformly on the package H by means of a traverse guide IQ of any known construction which traverses at right angles'to the path of the finished ya n 20.

The paths oi. the yarns l2, I3 and 20 are controlled respectively by flxed yarn guides 2|, 22 and 23 and adjacent the guides 22 and 23 are situated stop motion droppers 24 and 25 connected electrically or mechanically with the starting and stopping mechanism (not shown) in such a mannor as to stop the rotation of the spindle I and the take-up package I! if a thread breaks or ceases to A third dropper 26 is provided for the inner yarn l2, but as this dropper cannot be connected in any way with the stopping mechanism sincelt is situated inside the balloon made by the outer yarn i3, the dropper 2B is arranged so that should the yarn l2 break or cease to run the dropper 26 will interrupt and break the outer yarn l3 so that the machine will eventually be stopped by the action of the dropper 2a.

The path of the yarns in the arrangement above described is as follows: The outer yarn l3 passes from its passage I4 through the guide 22 to a point on or near the circumference oi the rotating disc 5. As the disc 5 is rotated the length of yarn between it andthe guide 22 forms the balloon. From the point on or near the circumference of the disc 5 the outer yarn passes inwards through one of the apertures 6 towards the centre and enters the bore 21 of the hollow spindle I through a hole 28 drilled for this pur- I I! meet and are laid the one about the. other.

They then pass out of the far end of the bore 21, beyond the bearing 2 and the'pulley 4, to the traverse guide l9 and to the take-up package l1.

The invention possesses the advantage that described receive individually no twist about their own axes during the process of being laid the one about another.

2,24s,sse

2. Mechanism for twisting together a plurality of yarns, comprising a hollow spindle having means for rotating it on its axis, supply packages for outer and inner yarns, said packages being non-rotatable about the axis of said spindle, a rotary device mounted on and rotatable with said spindle-and over and with which both of said yarns are arranged to travel and to retate about the axis of the spindle and to form a balloon or the outer yarn about the supply package for the inner yarn, and means for guiding both yarns from said rotary device into the bore of said spindle to lay'one yarn symmetrically about the other yarn.

3. Mechanism for twisting together yarns, comprising a'rotatable spindle having an axial bore extending therethrough and lateral apertures communicating therewith, supply packages for outer and inner yarns, both of said packages being non-rotatable about the axis of said spindie, a member projecting transversely from and rotatable with saidspindle to receive the yarns from the respective packages and rotate both yarns about the axis 01 the spindle and form a balloon of the outer yarn about the supply package for; the inner yarn, and means on said transverse member for guiding the yarns respectively, to the lateral apertures in the spindle and for laying one yarn about-the other yarn.

4. Mechanism for twisting together yarns,

comprising packages tor supplying the yarns, a hollow spindle having an axial passage therelayers of yarn produced in the manner above The invention is not limited'to the use of only one package of inner and one of outer yam, but as many packages 01 each type may be used as is desirable, any of which may be in use simultaneously or intermittently. Finally, the invention from the invention. For instance the rotating device may be of any form other than that of a disc and instead of using the weight 8 to prevent rotation of the bracket 9 and parts associated therewith, the desired result can be obtained by using magnetic attraction, gaseous or fluid pressure means. Also the rotary device 5 instead of taking the form of a disc may consist of a cone, cylinder or spider arms.

Although the hollow spindle has been shown as rotating about a horizontal axis, it will be understood that this axis could be inclined where circumstances made it necessary or could even occupy a vertical position.

I claim:

1. Mechanism for twisting together a plurality of yarns, comprising supply packages for outer and inner yarns, means rotatable relatively to said supply packages for rotating both outer and inner yarns about a common axis and forming a balloon of the outer yarn about the supply package for the inner yarn and to lay one yarn symmetrically about the other yarn and form a finished yarn free of twist-of each of the component yarns individually about its own axis.

through to receive-a yarn at one end .and to deliver the twisted yarns from its other end, said spindle having apertures in the sides thereof, and a disc fixed on said spindle and having means for guiding one yarn around the rim of said disc and through one of said apertures to the delivery and of the spindle and for guiding another yarn around the rim of said disc and through another of said apertures and wrapping it around the yarn within said spindle, and a take up package for the yarn delivered from the spindle.

5. Mechanism for twisting together yarns,

comprising a hollow spindle, means for driving one end of said spindle, a stationary bearing supporting the mid-portion of said spindle, a floating bearing carried by the other end tf said spindie, a bobbin for an inner yarn supported by said floating bearing, a disc fixed to and rotatable with said spindle, a bobbin for an outer yarn positioned to lead the yarn therefrom to the periphery of said disc to form a'balloon about the first namedbobbin and floating bearing, saiddisc having means for guiding the inner yarn around its periphery, and said spindle having means for. twisting the two yarns together therein, and a take up package for the finished yarn.

6. Mechanism according to claim 5, wherein said disc has a beaded rim around which the yarns are guided to pass and apertures for the travel of the yarns through the disc, and said spindle has radial passages for the travel of the yarns to the centre of the spindle for the laying of the yarns about one another.

7. Mechanism according to claim 5, including a stop motion dropper for the inner yarn arranged to break the outer yarn should the inner yarn cease to run, and stop motion droppers for the outer and finished yarns.

8. Mechanism for twisting together yarns,

comprising a spindle having a bore extending axially therethrough, and having apertures in messes its sides, means for rotating the spindle about its axis, a disc fixed to the spindle and having yarnguides alined with the respective apertures in the spindle, means non-rotatable with the spindle for supplying a yarn to one end or the bore of the spindle for passage outwardly through one of the apertures therein and around the periphery of the disc and for return past one of said guides and through its respective aperture in the spindle to the axial bore therein, and means non-rotatable with the spindle for supplying another yarn to the periphery of the disc to form. a balloon about the first-mentioned yarn supplying means an dior passage inwardly past another of said guides and through another of said apertures in the spindle to the axial bore of the spindle ior laying said yard about the first mentioned yarn therein.

9. Mechanism for twisting together l 1: comprising a spindle having a bore exten axially therethrough and a plurality of lateral apertures communicating therewith, means for rotating the spindle on its axis, a floating bearing on the spindle having means for preventing l rotation thereof with the spindle, a yarn supply bobbin on said bearing for sup; lying a yarn to one end of the axial bore of the spindle, a takeup bobbin non-rotatable with the spindle and in yarn receiving relation with the other end 01. the bore thereof, another yarn supply bobbin non-rotatable with the spindle, and a disc fixed on and rotatable with the spindle in position for the travel of both of said yarns around its pe-' riphery and for rotation of both of said yarns about the axis of the spindle and the forming of a balloon of one of said yarns about the supply bobbin for the other yarn, said disc having means thereon for guiding said yarns from its periphery to the respective apertures in the spindle and for twisting said yarns together within the bore of the spindle.

JOHN STEPHEN WALTERS. 

